Intracavity filtering effect in a dual-output linear-cavity all-PM fiber laser mode-locked by NPE.
Appl Opt
; 62(24): 6323-6332, 2023 Aug 20.
Article
em En
| MEDLINE
| ID: mdl-37706822
ABSTRACT
We have demonstrated a stable and low-noise all-polarization-maintaining (PM) ultrafast erbium-doped fiber laser mode-locked via nonlinear polarization evolution (NPE) in a linear cavity with dual outputs. A detailed design strategy is presented. The all-PM configuration enhances the capability of resistance to environmental fluctuations. Self-starting mode-locking is realized by using a non-reciprocal phase shifter. The dual-output structure offers the intracavity filtering effect, where the reflective port serves as a bandpass spectral filter, significantly improving the transmissive-port optical properties. The laser directly generates ultrashort pulses with a pulse duration of 129 fs operating at a fundamental repetition rate of 105.8 MHz. The integrated root-mean-square (RMS) relative intensity noise from 10 Hz to 10 MHz is â¼0.008%, and the integrated RMS timing jitter from 5 kHz to 10 MHz is â¼36f s. Long-term stability is confirmed in 25 h with a RMS power fluctuation of â¼0.10%. Our high-performance fiber laser is a prospective candidate for low-noise applications.
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MEDLINE
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En
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Appl Opt
Ano de publicação:
2023
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Article